Wireless USB 2.4G Optical Mouse SANOXY Wireless Mouse with 1000, 1200 and 1600 dpi switch 2.4GHz Wireless Cordless Mouse Mice Optical Scroll For PC Laptop Computer USB Mini adapter Plug and play Wireless transmission, the longest sensing distance up to 10-15 meters Portable and weight light, very convenient to carry and store With 6 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing Up to 10 meters of operating distance Power Supply: 2 x AAA Battery(Not included) Mouse type: Wireless Optical Mouse Interface: USB